Ok, I've tried version 1.9.3 + bzr1131 (newest, Ubuntu Lucid version), and thanks for all deveopers! Many issues found on version 1.9.3 have been fixed, including performance issue. This release runs fast!
A bug I found in this release is about service list (still!). When I add a song WITHOUT any author into service list, save it and reopen, it tells me an error.
One more time, why theme manager is changed to wizard mode? When I just want to change theme background, I must click Next button many times to close the wizard. Not efficient enough! Thanks.